Bengali is one of the focus language for Abstract Wikipedia. The Bengali Wikisource community has always remained open to Wikidata and has previously adopted Wikidata in different ways in index, author, publisher namespaces etc.
Like what is mentioned in T203220 as desired reuse, bn.ws has roughly experimented with modify Dictionary Lookup Hover script to link words in Wikisource texts to Wikidata lexemes through a extended version of Hauki tool and get information about the words while hovering over it.
Other than what is mention in T203220, intended reuse -
- Build a spell-checker based on lexicographical data on Wikisource and use it while proofreading.